ATP Houston 04/05 18:50 25 [108] Steve Johnson v Denis Kudla [81] 6-3,4-6,6-4
ATP Miami 03/22 22:10 19 [107] Steve Johnson v Jack Sock [144] 2-6,2-6
ATP Miami 03/21 20:55 14 [115] Steve Johnson v Michael Mmoh [244] 6-3,6-3
ATP Indian Wells 03/16 00:00 25 [115] Steve Johnson v Hubert Hurkacz [11] 6-7,3-6
ATP Indian Wells 03/13 18:00 24 [22] Aslan Karatsev v Steve Johnson [115] 6-7,4-6
ATP Indian Wells 03/12 01:20 23 [115] Steve Johnson v Daniel Altmaier [79] 6-3,7-6
ATP Acapulco 02/20 04:10 14 Stefan Kozlov v Steve Johnson 6-4,6-3
ATP Delray Beach 02/16 18:05 26 [99] Steve Johnson v Stefan Kozlov [151] 1-6,3-6
ATP Delray Beach 02/15 01:00 25 [99] Steve Johnson v Kevin Anderson [93] 6-2,6-7,6-2
ATP Dallas 02/09 18:00 25 [57] Adrian Mannarino v Steve Johnson [93] 6-7,6-2,7-6
Australian Open 01/20 11:05 24 [104] Steve Johnson v Jannik Sinner [10] 2-6,4-6,3-6
Australian Open 01/18 02:10 23 [104] Steve Johnson v Jordan Thompson [73] 7-6,6-7,4-6,6-3,6-3
ATP Adelaide 2 01/12 03:40 26 [160] Aleksandar Vukic v Steve Johnson [84] 6-4,7-5
ATP Adelaide 2 01/11 05:45 25 [142] Alex Bolt v Steve Johnson [84] 4-6,4-6
ATP Adelaide 2 01/10 06:00 19 [85] Steve Johnson v Thiago Monteiro [89] 7-6,6-4
ATP Adelaide 2 01/09 04:20 26 [85] Steve Johnson v Oscar Otte [101] 4-6,7-6,6-3
ATP Adelaide 01/06 03:50 26 [85] Steve Johnson v Karen Khachanov [29] 4-6,6-4,2-6
ATP Adelaide 01/03 11:05 25 [85] Steve Johnson v Aleksandar Vukic [156] 6-4,2-6,6-4
Challenger Las Vegas 10/26 20:25 25 [88] Steve Johnson v Aidan Mchugh [374] 4-6,4-6
Challenger Las Vegas 10/26 19:30 25 Steve Johnson v Ivo Karlovic Cancelled
ATP Indian Wells 10/08 02:40 23 [43] Alejandro Davidovich Fokina v Steve Johnson [86] 6-7,6-3,7-5
ATP San Diego 09/25 18:30 26 [86] Steve Johnson v Federico Gaio [157] 6-3,6-7,3-6
US Open 09/02 19:05 24 [20] Gael Monfils v Steve Johnson [87] 7-5,4-6,6-4,6-4
US Open 08/31 19:55 23 [87] Steve Johnson v Maximilian Marterer [212] 5-7,7-6,7-6,6-3
ATP Winston-Salem 08/23 23:35 24 [86] Steve Johnson v Alexei Popyrin [71] 5-7,4-6
ATP Cincinnati 08/15 15:00 19 [75] Kevin Anderson v Steve Johnson [78] 7-6,6-4
ATP Cincinnati 08/14 16:00 14 Steve Johnson v Emil Ruusuvuori 6-7,6-2,6-3
ATP Washington 08/06 19:25 27 [24] Jannik Sinner v Steve Johnson [81] 6-4,6-2
ATP Washington 08/05 18:00 26 [86] Ricardas Berankis v Steve Johnson [81] 2-6,1-6
ATP Washington 08/04 18:00 25 [81] Steve Johnson v Alex De Minaur [18] 6-7,6-4,6-2

Steve Johnson Jr The Third. (born December 24, 1989) is an American former professional tennis player.

He had a career-high singles ranking of world No. 21 achieved on July 25, 2016, and a doubles ranking of world No. 39 achieved on May 23, 2016. For one week in August 2016, Johnson was the top-ranked American in men's singles. He won four ATP Tour and nine ATP Challenger Tour titles, one at Nottingham on grass, twice at Houston on clay, and one at Newport on grass. He won a bronze medal in men's doubles at the 2016 Olympics with fellow American Jack Sock.

Johnson played college tennis for the USC Trojans. He won the NCAA Men's Singles Championship in his junior and senior seasons (2011–2012), and he was a part of a Trojan team that won four consecutive NCAA Championships.